{"title":"Efficacy and safety of postoperative adjuvant chemotherapy with oxaliplatin for elderly patients: results from the CCOG-1302 study.","authors":"Shinichi Umeda, Goro Nakayama, Takayoshi Kishida, Norifumi Hattori, Koki Nakanishi, Haruyoshi Tanaka, Dai Shimizu, Hideki Takami, Masamichi Hayashi, Mitsuro Kanda, Chie Tanaka, Yasuhiro Kodera","doi":"10.1007/s10147-025-02738-w","DOIUrl":null,"url":null,"abstract":"<p><strong>Background: </strong>Postoperative adjuvant chemotherapy using oxaliplatin in addition to 5-FU-based anticancer agents has become the standard treatment for colorectal cancer, however, there is insufficient evidence regarding the efficacy and safety of oxaliplatin combination therapy in the elderly patients. In this study, retrospective analysis of the results from the CCOG-1302 study was performed to confirm them.</p><p><strong>Methods: </strong>The patients in the CAPOX continuous (8 courses of CAPOX) and intermittent (2 courses of CAPOX + 4 courses of capecitabine + 2 courses of CAPOX) treatment arms in the CCOG-1302 study were divided into two groups, namely, the elderly (≥ 70) and non-elderly (< 70 years) groups. The adverse events, residual peripheral sensory neuropathy (PSN) and prognosis were analyzed.</p><p><strong>Results: </strong>The incidence of grade 3 or higher hematologic and non-hematologic toxicities in the continuous and intermittent treatment arm were not significantly different between the elderly and non-elderly groups. During the follow-up period, the percentages of grade I or higher PSN residuals were significantly higher among the elderly individuals in the continuous treatment arm at years 2, 3, 4, and 5. On the other hand, PSN decreased over time in the intermittent treatment arm as well as in the elderly and non-elderly patients. The 3-year DFS was not significantly different between the elderly and non-elderly groups in the continuous and intermittent treatment arms.</p><p><strong>Conclusion: </strong>Oxaliplatin combination chemotherapy can be safely administered to elderly patients. In addition, intermittent administration may be more useful in elderly individuals for the prevention of PSN.</p>","PeriodicalId":13869,"journal":{"name":"International Journal of Clinical Oncology","volume":" ","pages":""},"PeriodicalIF":2.4000,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"International Journal of Clinical Oncology","FirstCategoryId":"3","ListUrlMain":"https://doi.org/10.1007/s10147-025-02738-w","RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"ONCOLOGY","Score":null,"Total":0}
引用次数: 0
Abstract
Background: Postoperative adjuvant chemotherapy using oxaliplatin in addition to 5-FU-based anticancer agents has become the standard treatment for colorectal cancer, however, there is insufficient evidence regarding the efficacy and safety of oxaliplatin combination therapy in the elderly patients. In this study, retrospective analysis of the results from the CCOG-1302 study was performed to confirm them.
Methods: The patients in the CAPOX continuous (8 courses of CAPOX) and intermittent (2 courses of CAPOX + 4 courses of capecitabine + 2 courses of CAPOX) treatment arms in the CCOG-1302 study were divided into two groups, namely, the elderly (≥ 70) and non-elderly (< 70 years) groups. The adverse events, residual peripheral sensory neuropathy (PSN) and prognosis were analyzed.
Results: The incidence of grade 3 or higher hematologic and non-hematologic toxicities in the continuous and intermittent treatment arm were not significantly different between the elderly and non-elderly groups. During the follow-up period, the percentages of grade I or higher PSN residuals were significantly higher among the elderly individuals in the continuous treatment arm at years 2, 3, 4, and 5. On the other hand, PSN decreased over time in the intermittent treatment arm as well as in the elderly and non-elderly patients. The 3-year DFS was not significantly different between the elderly and non-elderly groups in the continuous and intermittent treatment arms.
Conclusion: Oxaliplatin combination chemotherapy can be safely administered to elderly patients. In addition, intermittent administration may be more useful in elderly individuals for the prevention of PSN.
期刊介绍：
The International Journal of Clinical Oncology (IJCO) welcomes original research papers on all aspects of clinical oncology that report the results of novel and timely investigations. Reports on clinical trials are encouraged. Experimental studies will also be accepted if they have obvious relevance to clinical oncology. Membership in the Japan Society of Clinical Oncology is not a prerequisite for submission to the journal. Papers are received on the understanding that: their contents have not been published in whole or in part elsewhere; that they are subject to peer review by at least two referees and the Editors, and to editorial revision of the language and contents; and that the Editors are responsible for their acceptance, rejection, and order of publication.
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